Rockford Fosgate X4.A Mode D'emploi page 10

O
PERATION
3. TIME DELAY – (Used to delay the signal output of either the Rear Right or Left, Front Right or Left,
Both Rear or Both Front channels)
SIGNAL SELECT - FRONT LEFT CHAN, FRONT RIGHT CHAN, FRONT L+R CHAN,
REAR LEFT CHAN, REAR RIGHT CHAN or REAR L+R CHAN
Selects the channel output for the signal delay.
DELAY ADJUST - 0-500 (setting in 20
This setting is individually adjustable for each Signal Select with a signal delay of up to 500 micro
seconds {0-10 milliseconds}. Settings made in either the Front Left or Right Channel select are additive
to the setting entered in Front L+R Channel select. Settings made in either the Rear Left or Right
Channel select are additive to the setting entered in Rear L+R Channel select. Adjusting the L or R
Channel delays allows the user to off-center or center the stereo imaging as desired, whereas the L+R
Channel delay setting can be used to balance the relative signal delay between the front and rear
channels or between two (2) separate amplifiers in systems using multiple amplifiers.
4. SUBSONIC – (Used to turn the subsonic filter on or off and adjust frequency)
SUBSONIC ON/OFF - ON or OFF {Default is OFF}
Setting this to "ON" engages a subsonic filter limiting the amount of low frequency information going
to the woofer with a -12dB/octave @ a variable 10 to 50Hz, adjustable in 1hz increments. This helps
prevent woofer damage due to over-excursion.
SUBSONIC FREQ - 10-50 (setting in Hz) {Default is 20}
5. PUNCH EQ - (Setting the Bass and Treble output of the amplifier for front and rear channels)
PUNCH BASS LEVEL FRONT - 0-18 (setting in dB) {Default is Ø}
PUNCH TREBLE LEVEL FRONT - 0-12 (setting in dB) {Default is Ø}
PUNCH BASS LEVEL REAR - 0-18 (setting in dB) {Default is Ø}
PUNCH TREBLE LEVEL REAR - 0-12 (setting in dB) {Default is Ø}
6. AUX OUTPUTS – (Setting the amplifier pass-thru/auxiliary outputs)
NOTE: The frequency set in either the REAR XOVER or FRONT XOVER is used here, selectable from
either the of the two and is not dependent on the crossover mode that was set in them.
NOTE: The selected input channel must be connected to get a proper signal to be used for the
pass-thru/auxiliary outputs.
AUX OUT SELECT - Source from the rear channel- R-DIRECT, R-HIGH PASS, R-LOW PASS or
R-ALL PASS, or from the front channel- DIRECT, HIGH PASS, LOW PASS or ALL PASS
{Default is R-ALL PASS}
Used to select the signal source from either th front or rear channel input and set signal output of the
Pass-Thru/Auxiliary Output RCA jacks between All Pass, High Pass, Low Pass or Direct mode. In the
High Pass or Low Pass mode, the frequency set in either the REAR or FRONT XOVER can be selected
and is used here. However, depending on the crossover set here, the Pass-Thru/Auxiliary Outputs can
be neutral (All Pass), the same or a *complimentary signal of the crossover type that was set in REAR
or FRONT XOVER, or, set to DIRECT to allow the source signal to pass through without any
processing delay. All Pass or Direct routes the full bandwidth input signal to the auxiliary Pass-Thru
RCA jacks. All Pass routes a time-delayed replica of the input signal that is synchronized to the
amplifier speaker outputs. Direct routes the input signal with no time delay, and is useful for cascading
multiple amplifiers without incurring any cumulative signal delay.
NOTE: This feature is useful when separate amplifiers are used to drive the high and low frequency bands.
By setting the first (1st) amplifier to drive the low frequency, setting XOVER mode to Low Pass, and
selecting High Pass for the Pass-Thru/Auxiliary Output RCA jacks, the *complimentary signal will
be amplified by the second (2nd) amplifier.
*Complimentary Signal is a term used when the source signal is exactly split into two (2) separate
frequency bands, a high and low band, in such a way that the resultant high and low band signals can be
amplified separately to accurately reproduce the original signal. There is no loss or "notch" in the overall
frequency response due to the splitting. This type of processing optimizes reproduction of the original
source material and is only possible using linear phase DSP (digital signal processing).
NOTE: The REAR and FRONT XOVER selections can also be used to produce a *complimentary signal
between the front and rear channel outputs.
10
sec increments) {Default is Ø}
µ